潮位変動に対する河口水位応答から推定される河口水深の精度

抄録

Development of sand spit at a river mouth is a concern for river authorities in connection with water level rise during a flood. Due to that reason, it is important to understand river mouth topography change due to river and tidal flows and waves. In order to obtain topography data at a river mouth, however, it is time consuming and expensive in general. If it is possible to estimate river mouth topography from water level data, it will be effective for river mouth maintenance, because water level measurement is much cheaper and easier as compared with ordinary field surveying. In the present study, an estimation method is proposed and applied to virtual data from 1-D model to validate the estimation method. Furthermore, the estimation method is applied to field observation data at the mouth of Natori River.